Please Don't Do Drugs.

Drug addiction will eventually cause a person to develop a form of Mental Retardation.

Mental Retardation definition is - mild to severe impairment in intellectual ability equivalent to an IQ of 70 to 75 or below that is accompanied by significant limitations in social, practical, and conceptual skills (as in interpersonal communication, reasoning, or self-care) necessary for independent daily functioning and that has an onset before age 18 : intellectual disability.